Filter
Top Products
C-2 Hard Drives
SMART
The hard drives for the Compaq Deskpro 2000 Series of Personal Computers are all SMART
compatible. Drives that are SMART compatible have built-in drive failure prediction that warns the
user or the network administrator of an impending failure or crash of the hard drive.
Automatic Soft-Drive Types
An automatic soft-drive type is a mechanism where the system ROM and Computer Setup provide
support for IDE/EIDE hard drives that are not supported in the hard drive parameter table. Computer
Setup automatically builds a soft-drive type when it finds that a hard drive is not in the hard drive
parameter table.
The soft-drive types assign according to the table below:
Table C-1
Soft-Drive Type Assignments
Drive Hard Drive Type Controller
0 65 Primary
1 66 Primary
0 68 Secondary
1 69 Secondary
For hard drives that are greater than 528 MB, the system automatically translates the hard drive
parameter for DOS by logically halving the cylinders and doubling the heads. This allows DOS to
access greater than 528 MB. The translated hard drive parameters are put into the hard drive
parameter table in the shadow RAM copy of the system ROM. When using any operating system
other than DOS, you must use the Compaq User Setup diskette to set up the hard drive parameter
table without translation.
Ultra ATA (Pentium II System only)
Ultra ATA is also referred to as ultra direct memory access (UDMA) and ATA33. This new protocol
doubles the transfer speed available with IDE/EIDE drives, from 16.7 MB/s to 33 MB/s. The increase
in transfer rates allows the hard drive to keep pace with other hardware improvements.
A significant new feature implemented by Ultra ATA is cyclical redundancy check (CRC). CRC
provides data protection verification that works at the higher speeds. This feature provides even
greater integrity at speeds less than the maximum transfer speed of 33 MB/s.
The Ultra ATA protocol is fully backward compatible with older ATA modes. The protocol allows
drives that support Ultra ATA to also support IDE/EIDE. These drives can be used with existing host
chipsets.
The Ultra ATA drives are SMART II compatible. This compatibility allows the drives to fall under
Compaq’s Prefailure Warranty.